Yu-Gi-Oh! Duel Monsters Yu-Gi-Oh! Duel Monsters Episode 199 Tomb of the Nameless Pharaoh ( Air Date 2004-04-07 ) Genre Animation, Kids, Action & Adventure category. Overview "Grandpa found the Millennium Puzzle decades ago, but little is known about the terrors, traps, turmoil and treachery he faced to find the ancient artifact! See how it all began as we learn how Grandpa unearthed the Millennium Puzzle – for without his discovery, Yugi would never have solved the Millennium Puzzle forty years later!".